SMALL-SCALE MOBILITY TESTS IN FINE-GRAINED LAYERED SOILS

Laboratory single-wheel tests were conducted with a 2.50-4 tire on uniform fine-grained soil and on two conditions of thick-layered, fine-grained soils: condition I in which a soft layer was placed over a firm layer, and condition II in which a firm layer was placed over a soft one. In both cases, the smallest ratio of layer thickness to tire width tested was 0.33. The results of the baseline tests on uniform soil showed that the WES numeric prediction system, which had not hitherto been used for such a small tire, will predict the performance of the small tire as accurately as it predicts the performance of a large tire. The system also can be used in predictions for layered-soil systems, if the soil strength of the top layer is used in the numeric and as long as the lower layer is relatively strong in relation to tire loading.

• Corporate Authors:

  U.S. Army Waterways Experiment Station

  3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199

  Army Materiel Command

  Systems Development Technical Area
  Alexandria, VA  United States 
• Authors:
  • Swanson, G D
  • Patin, T R
• Publication Date: 1975-6

Media Info

• Pagination: 77 p.

Subject/Index Terms

• TRT Terms: Dynamics; Fine grained soils; Forecasting; Laboratory tests; Loads; Mobility; Performance; Soil mechanics; Soils; Tires; Trafficability; Wheels
• Uncontrolled Terms: Soil dynamics
• Old TRIS Terms: Layered system mechanics; Pull
• Subject Areas: Geotechnology; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00092752
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: AEWES-RE-M-75-1 Final Rpt.
• Files: TRIS
• Created Date: Nov 5 1975 12:00AM